diff --git a/History.md b/History.md
index 218042a..d317060 100644
--- a/History.md
+++ b/History.md
@@ -1,5 +1,5 @@
 
-next
+2.2.0 / 2017-03-14
 ==================
 
  * fix: drop `package.engines.node` requirement to >= 6.0.0
diff --git a/package.json b/package.json
index 57be0d8..7521cd4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koa",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "description": "Koa web app framework",
   "main": "lib/application.js",
   "scripts": {